KEEA

This site brought to you by the
  Keystone Energy Efficiency Alliance

LED Lamps

LED

LED Lighting

Light-emitting diodes (LEDs) are small light sources that become illuminated by the movement of electrons through a semiconductor material. LED lighting is more efficient than incandescent and fluorescent lighting. LEDs emit light in a single axis, rather than in all directions in three dimensions.  This makes it usually at least twice as efficient as traditional light sources. 

What do I ask a contractor?

  • Tell your supplier or procurement official to only buy ENERGY STAR qualified — for good quality and a minimum three-year warranty.
  • Make sure you have a compatible dimmer switch if you want to dim your lights. Fixture manufacturers can provide a list of approved dimmers switches.
  • Make sure the color of the light is appropriate for the space — ask your supplier what colors are available.

LED stands for light-emitting diode. LEDs are small light sources that become illuminated by the movement of electrons through a semiconductor material. LED lighting can be more efficiant than incandescent and flourescent lighting.

LED lighting is more efficient, durable, versatile and longer lasting than incandescent and fluorescents lighting. LEDs emit light in a specific direction, whereas an incandescent or fluorescent bulb emits light — and heat — in all directions. LED lighting uses both light and energy more efficiently.

For example, an incandescent or compact fluorescent (CFL) bulb inside of a recessed can will waste about half of the light that it produces, while a recessed down light with LEDs only produces light where it’s needed — in the room below.

Website Administered by the Energy Coordinating Agency

Copyright © 2011 The Energy Coordinating Agency of Philadelphia